How do you use CICS JOURNAL DELETE?

Use CICS JOURNAL DELETE with RESP parameters to check response codes and handle any errors appropriately.

What are the different types of deletes?

Delete types include basic deletes (standard, mapped, unmapped, custom), advanced deletes (advanced, secure, encrypted, compressed), and specialized deletes (specialized, high-performance, low-latency, high-throughput).

When should you use CICS JOURNAL DELETE?

Use CICS JOURNAL DELETE when building applications that need to perform journal delete operations, when implementing delete management, when performing deletes, when building delete systems, or when implementing delete functionality.

CICS JOURNAL DELETE - Journal Delete

CICS JOURNAL DELETE performs journal delete operations, enabling delete management and output processing in CICS environments. It provides efficient delete capabilities for CICS applications.

What is CICS JOURNAL DELETE?

CICS JOURNAL DELETE performs journal delete operations, enabling delete management and output processing. It provides efficient delete capabilities, allowing applications to perform journal delete operations.

Command Syntax

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EXEC CICS JOURNAL DELETE
    [RESP(response-code)]
    [RESP2(response-code-2)]
END-EXEC.

Parameters Explained

RESP Parameters

Response codes returned by the command:

RESP: Primary response code - indicates the success or failure of the journal delete operation
RESP2: Secondary response code - provides additional error information when RESP indicates failure
Always check these codes for command success before proceeding with data processing
Handle command failures appropriately to prevent application errors

Delete Types

1. Basic Deletes

Basic deletes: Standard delete operations that handle simple removal without special formatting
Mapped deletes: Delete operations that use predefined field mappings to structure delete data
Unmapped deletes: Raw delete operations that handle unstructured removal without predefined field mappings
Custom deletes: Specialized delete operations designed for specific application requirements

2. Advanced Deletes

Advanced deletes: Complex delete operations that handle sophisticated removal processing and validation
Secure deletes: Delete operations that include encryption and security features for sensitive removal
Encrypted deletes: Delete operations that automatically encrypt delete data
Compressed deletes: Delete operations that handle compressed removal streams and automatically compress delete data

3. Specialized Deletes

Specialized deletes: Delete operations tailored for specific protocols or communication methods
High-performance deletes: Optimized delete operations designed for maximum throughput and efficiency
Low-latency deletes: Delete operations optimized for minimal delay and real-time processing requirements
High-throughput deletes: Delete operations designed to handle large volumes of removal efficiently

Implementation Example

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WORKING-STORAGE SECTION.
01 WS-RESPONSE            PIC S9(8) COMP.
01 WS-RESPONSE2           PIC S9(8) COMP.
 
PROCEDURE DIVISION.
    * Journal delete operation
    EXEC CICS JOURNAL DELETE
        RESP(WS-RESPONSE)
        RESP2(WS-RESPONSE2)
    END-EXEC.
    
    IF WS-RESPONSE NOT EQUAL DFHRESP(NORMAL)
        EXEC CICS WRITE OPERATOR
            TEXT('JOURNAL DELETE command failed')
        END-EXEC
        EXEC CICS RETURN END-EXEC
    END-IF.
    
    * Journal delete completed successfully
    * Continue processing

Delete Processing

1. Delete Preparation

Delete preparation includes:

Delete validation - ensuring the delete operation is properly configured and authorized
Delete formatting - preparing data structures and buffers for delete data
Delete encoding - setting up proper character encoding and data transformation
Delete processing - initializing the delete operation and preparing for removal

2. Delete Transmission

Delete transmission includes:

Delete routing - directing delete data to the appropriate processing location
Delete delivery - ensuring delete data reaches the correct destination within the application
Transmission confirmation - verifying that delete was completed successfully
Error handling - managing transmission failures and implementing retry mechanisms

3. Output Management

Output management includes:

User management - handling user sessions and maintaining connection state
Output formatting - structuring delete data for presentation or further processing
User experience - ensuring smooth data flow and responsive application behavior
Performance optimization - maximizing delete efficiency and minimizing resource usage

Common Response Codes

Success Response Codes

NORMAL (0): Journal delete completed successfully - removal was completed without errors
DELETE (4): Journal delete completed - operation completed with delete-specific status

Error Response Codes

INVREQ (16): Invalid request - the delete operation parameters are incorrect or unauthorized
NOTFND (20): Resource not found - the specified delete resource does not exist
LENGERR (22): Length error - the delete data length exceeds expected limits
DELETE (24): Delete error - a delete-specific error occurred during the operation

Best Practices

1. Delete Preparation

Prepare delete appropriately - ensure all necessary resources and configurations are in place
Validate delete content - verify that delete data meets expected format and quality standards
Handle different delete types - implement flexible processing to accommodate various removal formats
Ensure delete integrity - maintain data consistency and prevent corruption during removal

2. Error Handling

Check all response codes - always examine both RESP and RESP2 for complete error information
Handle delete failures - implement appropriate recovery mechanisms for failed delete operations
Implement retry logic - provide automatic retry capabilities for transient failures
Log error conditions - maintain detailed logs for troubleshooting and monitoring purposes

3. Performance Optimization

Minimize delete operations - reduce unnecessary delete calls to improve overall performance
Use efficient delete formats - choose appropriate data formats to minimize processing overhead
Optimize user updates - streamline user interface updates to reduce response time
Manage user resources - efficiently allocate and manage system resources for delete operations

Explain It Like I'm 5 Years Old

Imagine you're erasing something from your notebook:

When you want to erase something from your notebook, you take an eraser and rub it over the words until they disappear. If the eraser works, the words are gone. If the eraser doesn't work, you have to try again.

CICS JOURNAL DELETE is like erasing something from your notebook. The computer program takes an eraser and rubs it over the data until it disappears. If the eraser works, the data is gone. If the eraser doesn't work, the program has to try again.

Just like you erase things from your notebook, the computer program erases things from its journal!

Exercises

Exercise 1: Journal Delete Operation

Write a CICS JOURNAL DELETE command to perform a journal delete operation.

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EXEC CICS JOURNAL DELETE
    RESP(WS-RESPONSE)
    RESP2(WS-RESPONSE2)
END-EXEC.

Exercise 2: Delete Processing

How would you implement comprehensive delete processing that handles different delete types and requirements?

Answer: Identify different delete types and appropriate handling, implement delete validation and encoding, handle different delete types and capabilities, implement proper error handling for delete failures, optimize delete operations for performance, and maintain delete integrity throughout the process.

Quiz

Question 1

What is the primary purpose of CICS JOURNAL DELETE?

A) To format deletesB) To perform journal delete operationsC) To validate deletesD) To edit deletes

Answer: B) To perform journal delete operations

Question 2

Which parameter specifies the response code?

A) RESPB) RESPONSEC) CODED) DELETE

Answer: A) RESP

CICS JOURNAL DELETE - Journal Delete

What is CICS JOURNAL DELETE?

Command Syntax

Parameters Explained

RESP Parameters

Delete Types

1. Basic Deletes

2. Advanced Deletes

3. Specialized Deletes

Implementation Example

Delete Processing

1. Delete Preparation

2. Delete Transmission

3. Output Management

Common Response Codes

Success Response Codes

Error Response Codes

Best Practices

1. Delete Preparation

2. Error Handling

3. Performance Optimization

Explain It Like I'm 5 Years Old

Exercises

Exercise 1: Journal Delete Operation

Exercise 2: Delete Processing

Quiz

Question 1

Question 2

Related Concepts

CICS Delete Processing

CICS User Management

CICS Output Processing

Related Pages